CN110392392B - Communication method, communication device, and readable storage medium - Google Patents

Abstract

The present application provides a communication method, a communication device and a readable storage medium. The communication method includes: determining a second time according to the first time and the first processing delay, the first time is the estimated earliest time when the terminal equipment can send feedback information of the first downlink data, and the first processing delay is estimated The time delay for the terminal equipment to process the second downlink data, the time unit used by the second downlink data is located after the time unit used by the first downlink data, wherein the second time is located after the first time; send indication information to the terminal equipment, indicating The information is used to instruct the terminal device to send feedback information of the second downlink data at or after the second time. Through the present application, it can be avoided that the terminal device needs to process two downlink data at the same time, thereby increasing processing resources, thereby saving resources.

Description

Communication method, communication device, and readable storage medium

technical field

The present application relates to the field of communication, and more particularly, to a communication method, a communication device, and a readable storage medium.

Background technique

In the existing fifth-generation communication system or New Radio (NR), the Physical Downlink Shared Channel (PDSCH) is used to carry the data information sent by the network equipment to the terminal equipment, and the physical downlink control channel is used. (Physical Downlink Control Channel, PDCCH) to carry the control signaling sent by the network device to the terminal device, using the Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) or Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) to carry the PDSCH A feedback signal of whether the bearer data is successfully received, for example, an Acknowledgement (Acknowledgement, ACK) or a Negative Acknowledgement (Negative Acknowledgement, NACK).

In addition, the network device determines the transmission mode of the downlink data and the resources used to carry the feedback signal of the downlink data, and transmits it to the terminal device through downlink control signaling. The transmission mode of downlink data includes time-frequency resources, modulation mode, coding mode, resource mapping mode, etc. of the downlink data. The resources used to carry the feedback signal of the downlink data include time-frequency resources that carry the ACK/NACK of the feedback signal.

In the prior art, the network device independently obtains the processing delay according to the configuration conditions of each PDSCH, and performs scheduling so that the transmission duration of the ACK/NACK corresponding to the PDSCH is greater than or equal to the processing delay corresponding to the scheduling configuration of the PDSCH. That is to say, the earliest start time of sending the ACK/NACK of the terminal device is later than the N1 symbol after the terminal device receives the PDSCH, where N1 is the processing delay obtained according to the PDSCH configuration.

However, since the processing delays corresponding to different configuration conditions are different, if the configuration conditions of the two PDSCHs before and after are different, the processing delays will be different. It may occur that the current data must be processed because the previous scheduling has not been processed yet. In this case, the processing resources of the terminal device will be increased, thereby increasing the implementation cost of the terminal device. If the processing resources of the terminal device are not increased, the terminal device may fail to successfully receive the currently scheduled data or the previously scheduled data, resulting in a failure to receive.

SUMMARY OF THE INVENTION

The present application provides a communication method, a communication device, and a readable storage medium, which can avoid increasing the processing resources of a terminal device, thereby saving resources.

In a first aspect, a communication method is provided, the communication method comprising: determining a second time according to a first time and a first processing delay, where the first time is an estimated feedback that a terminal device can send first downlink data The earliest time of the information, the first processing delay is the estimated delay of the terminal device processing the second downlink data, and the time unit used by the second downlink data is located in the time unit used by the first downlink data Afterwards, wherein the second moment is located after the first moment; sending indication information to the terminal device, where the indication information is used to indicate that the terminal device is at the second moment or after the second moment Send feedback information of the second downlink data.

Through the embodiments of the present application, considering that different scheduling conditions may cause the terminal equipment to process downlink data differently, it may happen that the terminal equipment needs to process multiple downlink data at the same time, and then the processing resources of the terminal equipment need to be increased, resulting in waste of resources. In this embodiment of the present application, the network device schedules the timing of sending the feedback information of two downlink data using different time units, according to the earliest feedback moment of the previous downlink data (that is, the time of sending the feedback information of the first downlink data). An example of the time), and the earliest feedback time of the current downlink data (that is, an example of the time of transmitting the feedback information of the second downlink data) is determined. By considering the earliest feedback time of the previous downlink data, it can be avoided that the current downlink data must be processed before the previous scheduling has been processed, thereby increasing the processing resources and implementation costs of the terminal equipment, resulting in waste of resources.

With reference to the first aspect, in some implementations of the first aspect, the interval between the first moment and the second moment is greater than or equal to the first processing delay.

Through the embodiments of the present application, the earliest feedback time of the current downlink data is after the earliest feedback time of the previous downlink data, plus the delay of the terminal equipment processing the current downlink data, it can be further ensured that the terminal equipment processes two downlink data at the same time. data situation.

With reference to the first aspect, in some implementations of the first aspect, the first processing delay is determined according to the following parameters: the time corresponding to the last symbol on the time unit used by the second downlink data, the the time corresponding to the last symbol in the symbol used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, the duration required by the terminal device to process the second downlink data, the second downlink data The length of the time unit used by the data, and the length of the time slot corresponding to the second downlink data.

The terminal equipment starts to process the downlink data after receiving the demodulation reference signal DMRS, so the length of the time unit used by the second downlink data, the time when the DMRS ends, and the time required for the terminal equipment to process the second downlink data are comprehensively considered, and then determine The length of time that the terminal device actually processes the second downlink data, which can effectively avoid the problem of resource conflict caused by too short feedback time.

With reference to the first aspect, in some implementations of the first aspect, the first processing delay is T, and the T is obtained according to at least one of the following formulas: T=T1-T2+T3, or T =T4, or, T=T5, where T1 is the time corresponding to the last symbol on the time unit used by the second downlink data, and T2 is the time unit used by the second downlink data for bearer demodulation The time corresponding to the last symbol in the symbols of the reference signal DMRS, T3 is the duration required by the terminal device to process the second downlink data, T4 is the length of the time unit used by the second downlink data, and T5 is the required time. The length of the time slot corresponding to the second downlink data.

With reference to the first aspect, in some implementations of the first aspect, before determining the second moment according to the first moment and the first processing delay, the method includes: receiving capability information sent by the terminal device, and determining according to the capability information the first moment.

By receiving the capability information reported by the terminal device, it is possible to determine the time delay for the terminal device to process the first downlink data, the duration required for processing the second downlink data, and the like.

With reference to the first aspect, in some implementations of the first aspect, the communication method further includes: receiving capability information sent by the terminal device, and determining, according to the capability information, that the terminal device processes the second downlink data required time.

By receiving the capability information reported by the terminal device, the time required for the terminal device to process the second downlink data can be determined, and then the second time instant can be determined.

In a second aspect, a communication method is provided. The communication method includes: receiving indication information sent by a network device, where the indication information is used to instruct a terminal device to send second downlink data at a second time or after the second time. feedback information, wherein the second time is determined according to the first time and the first processing delay, and the first time is the estimated earliest time when the terminal device can send the feedback information of the first downlink data, The first processing delay is an estimated delay for the terminal device to process the second downlink data, the second time is located after the first time, and the time unit used by the second downlink data It is located after the time unit used by the first downlink data; and according to the indication information, the feedback information of the second downlink data is sent.

Through the embodiments of the present application, considering that different scheduling conditions may cause the terminal equipment to process downlink data differently, it may happen that the terminal equipment needs to process multiple downlink data at the same time, and then the processing resources of the terminal equipment need to be increased, resulting in waste of resources. In this embodiment of the present application, the network device schedules the timing of sending the feedback information of two downlink data using different time units, according to the earliest feedback moment of the previous downlink data (that is, the time of sending the feedback information of the first downlink data). An example of the time), and the earliest feedback time of the current downlink data (that is, an example of the time of transmitting the feedback information of the second downlink data) is determined. The terminal device sends the feedback information of the second downlink data after the second time according to the indication information sent by the network device, which can avoid processing two downlink data at the same time, thereby increasing the processing resources and implementation costs of the terminal device, resulting in waste of resources.

With reference to the second aspect, in some implementations of the second aspect, sending the feedback information of the second downlink data according to the indication information includes: when the time between the first moment and the second moment is The interval is greater than or equal to the first processing time delay, and according to the indication information, the feedback information of the second downlink data is sent after the second moment; or, when the first moment and the second When the interval between the times is smaller than the first processing time delay, the terminal device determines that the feedback information of the first downlink data is not ACK information.

When the terminal device is processing the first downlink data, if it receives the scheduling signaling of the second downlink data, the terminal device determines whether there is a conflict in receiving the two downlink data. The way of determining is to determine the feedback information for sending the first downlink data. Whether the interval between the time when the second downlink data is sent and the time when the feedback information of the second downlink data is sent is greater than the first processing delay. If there is a conflict, the terminal device determines that the feedback information of the first downlink data is not ACK information. In addition, the terminal device may also interrupt the processing of the first downlink data. If there is no conflict, for example, the processing of the first downlink data does not need to be interrupted, the second downlink data is buffered and the second downlink data is processed after the first downlink data processing is completed.

With reference to the second aspect, in some implementations of the second aspect, the interval between the first moment and the second moment is greater than or equal to the first processing delay.

Through the embodiments of the present application, the earliest feedback time of the current downlink data is after the earliest feedback time of the previous downlink data, plus the delay of the terminal equipment processing the current downlink data, it can be further ensured that the terminal equipment processes two downlink data at the same time. data situation.

With reference to the second aspect, in some implementations of the second aspect, the first processing delay is determined according to the following parameters: the time corresponding to the last symbol on the time unit used by the second downlink data, the the time corresponding to the last symbol in the symbol used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, the duration required by the terminal device to process the second downlink data, the second downlink data The length of the time unit used by the data, and the length of the time slot corresponding to the second downlink data.

The terminal equipment starts to process the downlink data after receiving the demodulation reference signal DMRS, so the length of the time unit used by the second downlink data, the time when the DMRS ends, and the time required for the terminal equipment to process the second downlink data are comprehensively considered, and then determine The length of time that the terminal device actually processes the second downlink data, which can effectively avoid the problem of resource conflict caused by too short feedback time.

With reference to the second aspect, in some implementations of the second aspect, the first processing delay is T, and the T is obtained according to at least one of the following formulas: T=T1-T2+T3, or T =T4, or, T=T5, where T1 is the time corresponding to the last symbol on the time unit used by the second downlink data, and T2 is the time unit used by the second downlink data for bearer demodulation The time corresponding to the last symbol in the symbols of the reference signal DMRS, T3 is the time required for the terminal device to process the second downlink data, T4 is the length of the time unit used by the second downlink data, and T5 is the required time. The length of the time slot corresponding to the second downlink data.

With reference to the second aspect, in some implementations of the second aspect, before receiving the indication information sent by the network device, the method includes: sending capability information to the network device, and the first moment is determined according to the capability information.

The capability information of the terminal device reported by the terminal device can determine the time delay for the terminal device to process the first downlink data, the duration required for processing the second downlink data, and the like.

With reference to the second aspect, in some implementations of the second aspect, the communication method further includes: sending capability information to the network device, and the time required for the terminal device to process the second downlink data is based on the determined by the capability information.

In a third aspect, a communication apparatus is provided, the apparatus is a network device or a chip in the network device, and includes a processing unit and a transceiver for executing the method described in the first aspect or any one of the implementation manners of the first aspect. unit. When the apparatus is a network device, the processing unit may be a processor, the transceiver unit may be a transceiver, and the transceiver includes a radio frequency circuit; optionally, the network device further includes a storage unit, and the storage unit may be a memory. When the device is a chip in a network device, the processing unit may be a processor, and the transceiver unit may be an input/output interface, pin or circuit, etc. on the chip; the processing unit may execute computer execution stored in the storage unit instruction, optionally, the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the network device (for example, a read-only memory (read-only memory) located outside the chip only memory, ROM)) or other types of static storage devices (eg, random access memory (RAM)) that can store static information and instructions, and the like. The processor mentioned in any of the above may be a central processing unit (CPU), a microprocessor or an application specific integrated circuit (ASIC), or one or more On the one hand, an integrated circuit for program execution of the signal transmission method in any possible implementation manner.

In a fourth aspect, a communication apparatus is provided, the apparatus is a terminal device or a chip in the terminal device, and includes a processing unit and a transceiver for executing the method described in the second aspect or any one of the implementation manners of the second aspect. unit. When the apparatus is a terminal device, the processing unit may be a processor, the transceiver unit may be a transceiver, and the transceiver includes a radio frequency circuit; optionally, the terminal device further includes a storage unit, and the storage unit may be a memory. When the device is a chip in a terminal device, the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin or a circuit on the chip; the processing unit may execute computer execution stored in the storage unit. instruction, optionally, the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory (read-only memory). only memory, ROM)) or other types of static storage devices (eg, random access memory (RAM)) that can store static information and instructions, and the like. The processor mentioned in any of the above may be a central processing unit (CPU), a microprocessor or an application specific integrated circuit (ASIC), or one or more On the one hand, an integrated circuit for program execution of the signal transmission method in any possible implementation manner.

In a fifth aspect, a network device is provided, where the network device includes: a processor and a transceiver, configured to execute the method described in the first aspect or any one of the implementation manners of the first aspect.

In a sixth aspect, a terminal device is provided, where the terminal device includes: a processor and a transceiver, configured to execute the method described in the second aspect or any one of the implementation manners of the second aspect.

In a seventh aspect, a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer software instructions, and the computer-readable storage medium includes a method for executing the first aspect or any one of the implementation manners of the first aspect. designed program.

In an eighth aspect, a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer software instructions, and the computer-readable storage medium includes a method for executing the second aspect or any one of the implementation manners of the second aspect. designed program.

In a ninth aspect, a computer program product is provided, the computer program product includes: computer program code, when the computer program code runs on a computer, causes the computer to execute the first aspect or any one of the implementation manners of the first aspect the method described.

In a tenth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to execute the second aspect or any one of the implementation manners of the second aspect the method described.

In an eleventh aspect, a chip is provided, comprising a processor and a memory, the memory is used for storing a computer program, the processor is used for calling and running the computer program from the memory, and the computer program is used for implementing the methods in the above aspects .

A twelfth aspect provides a communication system, where the communication system includes the network device described in the third aspect or the fifth aspect and the terminal device described in the fourth aspect or the sixth aspect.

Description of drawings

FIG. 1 is a schematic diagram of a system applicable to the communication method of the embodiment of the present application;

FIG. 2 is a schematic diagram of processing downlink data applicable to the communication method of the embodiment of the present application;

3 is a schematic diagram of processing first downlink data applicable to the communication method according to the embodiment of the present application;

FIG. 4 is a schematic diagram of processing first downlink data applicable to the communication method according to the embodiment of the present application;

5 is a schematic diagram of a conflict occurring when processing downlink data in a communication method applicable to an embodiment of the present application;

6 is a schematic diagram of a communication method provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of processing first downlink data and processing second downlink data in a communication method applicable to an embodiment of the present application;

FIG. 8 is a schematic block diagram of a network device provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a network device provided by an embodiment of the present application;

FIG. 10 is a schematic block diagram of a terminal device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (Wideband) system Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, future fifth generation (5th Generation, 5G) system or new Wireless (New Radio, NR) and so on.

The terminal device in this embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or terminals in the future evolved Public Land Mobile Network (PLMN) equipment, etc., which are not limited in this embodiment of the present application.

The network device in this embodiment of the present application may be a device used to communicate with a terminal device, and the network device may be a Global System of Mobile communication (GSM) system or a Code Division Multiple Access (Code Division Multiple Access, CDMA). It can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station (Evolutional NodeB) in an LTE system. , eNB or eNodeB), it can also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and future 5G The network equipment in the network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiments of the present application.

FIG. 1 is a schematic diagram of a system 100 to which the communication method according to the embodiment of the present application can be applied. As shown in FIG. 1 , the system 100 includes a network device 102 , which may include one antenna or multiple antennas, eg, antennas 104 , 106 , 108 , 110 , 112 , and 114 . Additionally, the network device 102 may additionally include a transmitter chain and a receiver chain, each of which may include various components (eg, processors, modulators, multiplexers) related to signal transmission and reception, as will be understood by those of ordinary skill in the art. , demodulator, demultiplexer or antenna, etc.).

Network device 102 may communicate with a plurality of end devices (eg, end device 116 and end device 122). It will be appreciated, however, that network device 102 may communicate with any number of end devices similar to end device 116 or end device 122 . Terminal devices 116 and 122 may be, for example, cellular telephones, smart phones, laptop computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable device for communicating over wireless communication system 100 . equipment.

As shown in FIG. 1, terminal device 116 communicates with antennas 112 and 114, wherein antennas 112 and 114 transmit information to terminal device 116 via a forward link (also referred to as a downlink) 118, and via a reverse link (also referred to as a downlink) 118 Referred to as the uplink) 120 receives information from the terminal device 116 . In addition, terminal device 122 communicates with antennas 104 and 106 , which transmit information to terminal device 122 via forward link 124 and receive information from terminal device 122 via reverse link 126 .

For example, in a Frequency Division Duplex (FDD) system, forward link 118 may use a different frequency band than reverse link 120, and forward link 124 may use a different frequency band than reverse link 126, for example frequency band.

As another example, in a Time Division Duplex (TDD) system and a Full Duplex system, forward link 118 and reverse link 120 may use a common frequency band, forward link 124 and reverse link 120 Links 126 may use a common frequency band.

Each antenna (or group of antennas) and/or area designed for communication is referred to as a sector of network device 102 . For example, an antenna group may be designed to communicate with terminal devices in sectors of the network device 102 coverage area. A network device can transmit signals to all terminal devices in its corresponding sector through a single antenna or multi-antenna transmit diversity. The transmit antenna of network device 102 may also utilize beamforming to improve the signal-to-noise ratio of forward links 118 and 124 during communication of network device 102 with terminal devices 116 and 122, respectively, over forward links 118 and 124. Furthermore, when the network device 102 utilizes beamforming to transmit to the randomly dispersed terminal devices 116 and 122 in the associated coverage area, compared to the manner in which the network device transmits signals to all of its terminal devices through a single antenna or multiple antenna transmit diversity, Mobile devices in neighboring cells experience less interference.

The communication system 100 may be a PLMN network, a D2D network, an M2M network, an IoT network or other networks. FIG. 1 is a simplified schematic diagram of an example, and the network may also include other network devices, which are not shown in FIG. 1 .

Furthermore, at a given time, the network device 102, the terminal device 116, or the terminal device 122 may be a wireless communication transmitter and/or a wireless communication receiver. When transmitting data, the wireless communication transmitting device may encode the data for transmission. Specifically, the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be contained in a transport block (or transport blocks) of data, which may be segmented to produce multiple code blocks.

In a wireless communication system, in order to improve communication reliability, a hybrid automatic feedback retransmission (Hybrid Automatic Repeat reQuest, HARQ) technology is usually used. This technique combines Forward Error Correction (FEC) with Automatic Repeat reQuest (ARQ). A Media Access Control (MAC) layer data packet at the sender is called a Transport Block (TB), a MAC layer transport block, which is sent to the antenna port for transmission after FEC encoding and modulation at the physical layer. go out. After reaching the receiving end, demodulation and decoding are carried out through the physical layer of the receiving end, and the decoding result is fed back to the transmitting end. If the receiving end can receive the data packet correctly, the receiving end sends an acknowledgment character (Acknowledgement, ACK) signal to the sending end; if the receiving end cannot receive the data packet correctly, the receiving end sends a negative character (NegativeAcknowledgment, ACK) to the sending end. NACK) signal. If the sender receives the NACK feedback from the receiver, it resends the data packet. One of the HARQ technologies is the incremental redundancy (Incremental Redundancy, IR) technology. IP technology transmits information bits and a part of redundant bits during the first transmission, and sends additional redundant bits through retransmission. If the first transmission is not successfully decoded, the channel coding rate can be reduced by retransmitting more redundant bits, thereby increasing the decoding success rate. If the redundant bits added for retransmission still cannot be decoded normally, retransmission is performed again. With the increase of the number of retransmissions, the redundant bits are continuously accumulated, and the channel coding rate is continuously reduced, so that a better decoding effect can be obtained. Generally speaking, the first transmitted data packet can be decoded independently, but the retransmitted data packet may only transmit less redundant bits, and the retransmitted data packet alone cannot be decoded independently.

In the existing fifth-generation communication system or NR, the Physical Downlink Shared Channel (PDSCH) is used to carry the data information sent by the network equipment to the terminal equipment, and the Physical Downlink Control Channel (PDCCH) is used. To carry the control signaling sent by the network device to the terminal device, the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH) are used to carry the data based on whether the data carried by the PDSCH is successfully received. Acknowledgement signal ACK/NACK.

The embodiments of the present application are mainly concerned with downlink HARQ. The following briefly introduces the method adopted for downlink HARQ by taking network equipment and terminal equipment as examples.

The network device determines the transmission mode of the downlink data and the resources borne by the feedback signal for the downlink data, and transmits it to the terminal device through downlink control signaling. The transmission mode of downlink data includes time-frequency resources, modulation mode, coding mode, resource mapping mode, etc. of the downlink data. Bearing resources of the feedback signal for the downlink data include time-frequency resources of the feedback signal ACK/NACK. The time-frequency resources of ACK/NACK can be specified directly through the control signaling sent by the network device, or obtained according to certain rules, or some resource information is specified through control signaling, and some resource information is obtained from predefined rules.

The terminal device first receives the downlink control signaling to obtain the transmission mode of the PDSCH that needs to be received by itself, and then receives the corresponding PDSCH according to the defined transmission mode, and decodes the data blocks carried on the PDSCH. The data block is also called a transmission block (transmission block, TB). The terminal device generates a corresponding ACK signal or NACK signal according to the decoding result, and then transmits the corresponding ACK/NACK signal on the ACK/NACK transmission resource according to the determined ACK/NACK transmission mode.

The downlink data processing delay of the terminal equipment refers to the earliest possible start time for the terminal equipment to send HARQ information corresponding to the PDSCH from the end of receiving the last orthogonal frequency division multiplexing (OFDM) symbol of a PDSCH to the earliest possible transmission start time of the terminal equipment. time interval. The HARQ information includes ACK/NACK information fed back by the terminal device. Generally, the time interval from the end of receiving the last OFDM symbol of a PDSCH to the start time of sending the ACK/NACK signal by the terminal device is greater than or equal to the downlink data processing delay of the terminal device.

The downlink data processing delay is represented by an OFDM symbol, and is denoted as N1 OFDM symbols, where N1 is a positive number. Currently, for different PDSCH transmission modes, there are different processing delays. The downlink data processing delay sizes under different scheduling conditions are shown in Table 1 below.

Table 1

The scheduling condition represents the scheduling condition of the PDSCH by the network device. The scheduling conditions of PDSCH include: PDSCH duration, PDSCH sub-carrier spacing (Sub-Carrier Spacing, SCS), PDSCH demodulation reference signal (DoModulation Reference Signal, DMRS) configuration, and the like.

Wherein, the PDSCH duration may be between 7-14 OFDM symbols, or the PDSCH duration may also be between 2-7 OFDM symbols.

Wherein, a demodulation reference signal (DoModulation Reference Signal, DMRS) refers to a reference signal together with PDSCH and used for PDSCH demodulation, and a terminal device obtains a channel estimation result according to the demodulation reference signal to PDSCH for demodulation. DMRS has two configuration modes, one is: only the pre-demodulation reference signal, that is, "Front-loaded DMRS only". The other is that there are both pre-demodulation reference signals and additional demodulation reference signals, that is, "Front-loaded DMRS+Additional DMRS". The terminal device generally starts to calculate the channel estimation after obtaining all the DMRSs of a PDSCH.

The sub-carrier spacing (Sub-Carrier Spacing, SCS) is the sub-carrier spacing of an Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) signal during PDSCH transmission.

Among them, N1: From the perspective of the terminal equipment, the earliest possible start time of transmission from the end of PDSCH reception to the corresponding ACK/NACK is defined as the number of OFDM symbols required by the terminal equipment for processing. Under different PDSCH scheduling conditions, N1 is different. For example, under the configuration of 15KHz SCS, PDSCH duration of 14 OFDM symbols, and only pre-demodulation reference signal, N1 is 8. Under the configuration of 15KHz SCS, 14 OFDM symbols in duration, both pre-demodulation reference signals and additional demodulation reference signals, N1 is 13.

As mentioned above, the network device determines the time-frequency resources of the feedback signal ACK/NACK, including the transmission time of the ACK/NACK corresponding to the PDSCH scheduled by the network device. One way is that the network device determines according to the scheduling conditions (or transmission mode, or scheduling configuration, or configuration conditions, etc.) of the PDSCH.

Specifically, the transmission time of the ACK/NACK corresponding to the scheduling of the PDSCH by the network device is greater than or equal to the processing delay corresponding to the scheduling condition of the PDSCH. That is to say, from the perspective of the terminal device, the earliest start time of sending ACK/NACK is later than N1 symbols after the end of PDSCH reception. From the perspective of the network device, the earliest start time for the network device to receive the ACK/NACK of the PDSCH is later than (N1+TA) symbols. Wherein, TA represents a timing advance (timingadvanced, TA), for example, it may refer to an uplink timing advance of a terminal device relative to downlink transmission. TA can be measured in units of symbols, absolute time or in units of sampling rate. Here, we measure in units of symbols.

Table 2

For example, the network device schedules two PDSCHs, denoted as PDSCH D1 and PDSCH D2. The length of PDSCH D1 is 14 OFDM symbols, SCS=15kHz, and the DMRS of PDSCH D1 is configured to have both pre-demodulation reference signals and additional demodulation reference signals. The length of PDSCH D2 is 13 OFDM symbols, SCS=15 kHz, and the DMRS of PDSCH D2 is configured to have only pre-demodulation reference signals.

For ease of understanding, first, the symbols mentioned in the embodiments of the present application are described in conjunction with Table 2 and FIG. 2 .

In the embodiment of the present application, firstly, the value of TA_1 of PDSCH D1 and the value of TA_2 of PDSCH D2 are the same as an example for description, but the embodiment of the present application is not limited to this.

In this embodiment of the present application, symbols are represented by OFDM symbols. And is the absolute symbol position calculated from a certain time as symbol 0. If the first symbol of data of PDSCH D1 is used as symbol 0, as shown in FIG. 2 , for PDSCH D1, the length of PDSCH D1 is 14 OFDM symbols. Wherein, the last symbol of PDSCH D1 carrying DMRS is symbol 11, that is, X1_1=11. The symbol of the last data of PDSCH D1 is symbol 13, ie, X1_2=13. The symbols here are numbered from 0, that is to say, the first symbol of PDSCH D1 is symbol 0.

For PDSCH D2, the length of PDSCH D2 is 13 OFDM symbols. If the first symbol of the data of PDSCH D1 is symbol 0, the last symbol of PDSCH D2 carrying the DMRS is symbol 17, that is, X2_1=17. The symbol of the last data of PDSCH D2 is symbol 26, ie, X2_2=26.

It can be seen from FIG. 2 that PDSCH D1 and PDSCH D2 are transmitted in two adjacent time slots.

FIG. 3 and FIG. 4 respectively show schematic diagrams of processing when the terminal equipment schedules PDSCH D1 and PDSCH D2. Taking PDSCH D1 as an example, PDSCH D1 is transmitted in the Nth time slot, the last data symbol of PDSCH D1 is the symbol X1_2 of the N time slot, and the first symbol of the corresponding ACK/NACK is transmitted in X1_3. Angle, X1_3 is greater than (X1_2+N1_1). Among them, K1 is a positive integer. L represents the number of symbols in a slot. For example, L=14 or L=7 or others. From the perspective of the network device, the first symbol of the ACK/NACK received by the network device is the symbol (X1_3+TA) of the (N+K1)th time slot.

When the terminal device performs data processing, generally speaking, it can start channel estimation, demodulation, decoding and other processing only after receiving all the DMRSs of the PDSCH that need to be received. As can be seen from Figure 3 and Figure 4, since the terminal device can start the processing of channel estimation and demodulation earlier in the scenario of only the pre-demodulation reference signal, the PDSCH processing is calculated from the end time of the last symbol of the PDSCH. The delay is shorter than the value in the case where the PDSCH has both a pre-demodulation reference signal and an additional demodulation reference signal.

When the network device performs scheduling in the above manner, the processing delay N1 is obtained independently according to the scheduling conditions of each PDSCH, and the transmission time of ACK/NACK is determined according to N1. However, since the processing time corresponding to different scheduling conditions is different, only the scheduling conditions of the current PDSCH are considered, and the processing times of the two PDSCHs before and after are not considered due to different scheduling conditions. The current data situation must be dealt with, which in turn creates a handling conflict problem. Figure 5 shows a situation where a conflict occurs.

As shown in FIG. 5 , the network device continuously schedules PDSCH D1 (which may also be referred to as D1 for short) and PDSCH D2 (which may also be referred to as D2 for short). PDSCH D1 is transmitted in time slot N, and the network device determines that the transmission time of ACK/NACK for PDSCH D1 is the first symbol of (N+K1)=N+2 time slot after PDSCH D1 to start transmitting X1_3=0, assuming TA used a symbol. In the above manner, the time for the network device to configure the sending of the feedback information (ACK/NACK) of the PDSCH D1 is greater than or equal to (N1+TA). Then the first symbol of the (N+K1)=N+2 time slot after the configured PDSCH D1 starts to transmit, and the position of the symbol X1_2 of the last PDSCH from the PDSCH D1 is 14 symbols, which can meet the requirements set by the prior art. conditions of. Similarly, according to the above manner, the network device configures the time for sending the feedback information (ACK/NACK) of PDSCH D2 according to (N1+TA) or greater. PDSCH D1 is transmitted in time slot N+1, then the ninth symbol of the (N+1+1) time slot after the configured PDSCH D2 starts to transmit, and the position of the last PDSCH symbol X2_2 from PDSCH D2 is 9 symbols , which can satisfy the conditions set by the prior art. However, to determine the processing delay of the current PDSCH according to the current PDSCH scheduling configuration, and then to further determine the ACK/NACK feedback time of the current PDSCH, there will be a situation where the current data must be processed because the previous scheduling has not been processed. As shown in the figure below, the data of PDSCH D2 needs to be processed before the demodulation of PDSCH D1 is processed. The solution to this problem is to increase the processing resources of the terminal equipment, but increasing the processing resources of the terminal equipment will greatly increase the implementation cost of the terminal equipment.

The embodiment of the present application proposes a communication method, which can solve the problem that the terminal receiving resources (such as demodulator, decoder and other resources) conflict later due to the different scheduling configurations of the two PDSCHs before and after.

It should be noted that, in the embodiments of the present application, "data" or "information" can be understood as bits generated after an information block is encoded, or, "data" or "information" can also be understood as an information block after encoding and modulation Generated modulation symbols. Wherein, one information block may include at least one TB, or, "an information block may include at least one TB group (including at least one TB), or, "an information block may include at least one code block (Code Block, CB), or , "An information block may include at least one CB group (including at least one CB), etc.

It should also be noted that, in the implementation of this application, "PDSCH data" refers to downlink data carried on the PDSCH, and those skilled in the art understand its meaning. In the embodiments of the present application, "PDSCH data" and "PDSCH" may sometimes be used interchangeably. It should be noted that, when the difference is not emphasized, the meanings to be expressed are the same.

It should also be noted that in this application, the first and the second are only for the convenience of distinguishing different objects, for example, distinguishing downlink data carried at different time domain locations, etc., and should not constitute any limitation to this application.

It should also be noted that "and/or" describes the association relationship between associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, can mean: A exists alone, A and B exist simultaneously, and B exists alone these three situations. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one" refers to one or more than one; "at least one of A and B", similar to "A and/or B", describes the association relationship of associated objects, indicating that there can be three kinds of relationships, for example, A and B At least one of the three cases can represent: A exists alone, A and B exist simultaneously, and B exists alone. The communication method 200 according to the embodiment of the present application will be described in detail below with reference to FIG. 6 .

First, for ease of understanding, the terms mentioned in the embodiments of the present application are analyzed and explained.

1. Feedback information of downlink data

The feedback information of the downlink data refers to that after the terminal device #A receives the downlink data, it sends ACK/NACK information to the network device #A, indicating whether the downlink data is correctly received. The specific form of the feedback information is not limited in this embodiment of the present application. For example, it may be in the form of ACK/NACK, or may be in the form of discontinuous transmission (Discontinuous Transmission, DTX).

2. Feedback time

In the embodiments of the present application, for ease of understanding and description, the time when the feedback information of the downlink data is sent is recorded as the feedback time. For example, the feedback time of the first downlink data refers to the earliest time when the feedback information of the first downlink data can be sent. The feedback time of the second downlink data refers to the earliest time when the feedback information of the second downlink data can be sent.

3. Time unit

In this embodiment of the present application, data or information may be carried through time-frequency resources, where the time-frequency resources may include resources in the time domain and resources in the frequency domain. Wherein, in the time domain, the time-frequency resources may include one or more time-domain units (or may also be referred to as time units), and in the frequency domain, the time-frequency resources may include frequency-domain units.

Wherein, a time domain unit (also referred to as a time unit) may be a symbol, or a mini-slot (Mini-slot), or a slot (slot), or a subframe (subframe), wherein a subframe (subframe) The duration of a frame in the time domain may be 1 millisecond (ms), a slot consists of 7 or 14 symbols, and a mini-slot may consist of at least one symbol (eg, 2 symbols or 7 symbols or 14 symbols). symbols, or any number of symbols less than or equal to 14 symbols).

In this embodiment of the present application, the calculation of the processing time is calculated in units of symbols, which can be converted to absolute time according to the SCS and Cyclic Prefix (Cyclic Prefix, CP) size of the current time slot. In the embodiment of the present application, the symbol may be an OFDM symbol as an example for description. It should be noted that the specific form of the symbols does not limit the protection scope of the embodiments of the present application.

In this embodiment of the present application, the system 100 may include one or more network devices, and the actions performed by each network device in the communication method 200 in this embodiment of the present application are similar. Hereinafter, for ease of understanding, without loss of generality, The operation of the network device #A will be described as an example.

In addition, in the communication system, there may be one or more terminal devices that have accessed the network device #A, and the actions performed by the multiple terminal devices in the communication method 200 in this embodiment of the present application are similar. Hereinafter, for convenience It is understood that, without loss of generality, the control process of the terminal device #A is taken as an example for description.

FIG. 6 is a schematic interaction diagram of a communication method 200 according to an embodiment of the present application. The method 200 includes steps 210-220, which are described in detail below.

210. The network device #A determines the second time according to the first time and the first processing delay. The first time is the earliest time estimated by the network device #A that the terminal device #A can send the feedback information of the first downlink data, and the first time A processing delay is the delay estimated by the network device #A for the terminal device #A to process the second downlink data, and the time unit used by the second downlink data is located after the time unit used by the first downlink data, wherein, The second moment is located after the first moment.

In the embodiment of the present application, the PDSCH is used to carry the data information sent by the network device to the terminal device as an example for description. That is, the following description will be given by taking the following row data carried on the PDSCH as an example. In the following, for ease of understanding, without loss of generality, the first downlink data is PDSCH D1 and the second downlink data is PDSCH D2 as an example for description.

It should be noted that the PDSCH D1 may refer to the first downlink data carried on the PDSCH D1; the PDSCH D2 may refer to the second downlink data carried on the PDSCH D2. The time unit used by PDSCH D2 is after PDSCH D1, for example, it may be two adjacent time slots.

It should be understood that, in this embodiment of the present application, the time unit used by the downlink data refers to the time resource that bears the downlink data.

The PDSCH D1 is the PDSCH (ie, the downlink data carried on the PDSCH) scheduled by the network device #A to be received by the terminal device #A before the PDSCH D2. The network device #A obtains the scheduling condition of the PDSCH D1 scheduled for the terminal device #A, and the scheduling condition includes: SCS, the scheduling duration of the PDSCH, and the pattern of the DMRS. According to the scheduling duration of the SCS, the PDSCH, and the pattern of the DMRS, look up Table 1, and obtain the processing delay of the PDSCH D1 as N1_1. Then, the network device #A can determine the earliest time (ie, an example of the first time) at which the terminal device #A can send the feedback information of the PDSCH D1 from the perspective of the terminal device, that is, determine X1_3. X1_3 is the position where the N1_1 symbol is added after the last symbol of the PDSCH D1 and the position where the 1 symbol is added. From the perspective of the network device, the earliest moment when the network device #A can receive the feedback information of the PDSCH D1 is X1_3+1+TA.

The network device #A determines the second time according to the first time and the first processing delay. In one implementation manner, the first processing delay is the estimated delay of the terminal device #A for processing PDSCH D2 by the network device #A. Different from the prior art, the processing delay is calculated according to the end time of receiving the last symbol of the data of PDSCH D2, and the first processing delay here is calculated according to the end time of receiving the last symbol of the DMRS of PDSCH D2.

Optionally, in one implementation manner, the first processing delay is a fixed value, such as the length of the time slot corresponding to PDSCH D2. For example, the length of the time slot used by the PDSCH D2 is 14 OFDM symbols, and the first processing delay is 14 OFDM symbols.

Optionally, in another implementation manner, the first processing delay is the length of the time unit used by PDSCH D2. For example, the length of the time unit used by PDSCH D2 is 13 OFDM symbols, that is, PDSCH D2 is carried by 13 OFDM symbols, and at this time, the first processing delay is 13 OFDM symbols.

The first time may refer to the earliest time estimated by the network device #A to send the feedback information of the PDSCH D1. The second time may refer to the earliest time estimated by the network device #A to send the feedback information of the PDSCH D2. For ease of understanding and description, the first moment and the second moment are hereinafter referred to as the feedback time of PDSCH D1 and the feedback time of PDSCH D2, respectively.

In this embodiment of the present application, network device #A determines the feedback time of PDSCH D2 according to the feedback time of PDSCH D1 and the first processing delay, thereby avoiding resource waste caused by terminal device #A processing two PDSCHs simultaneously.

Optionally, the network device #A determines that the time interval between the feedback time of PDSCH D2 and the feedback time of PDSCH D1 is greater than or equal to a preset threshold, and the preset threshold may be determined according to the scheduling conditions of PDSCH, or, It may be determined according to an empirical value, which is not limited in this embodiment of the present application. According to the scheduling conditions of the PDSCH, for example, the time interval between the first moment and the second moment may be greater than or equal to the length of the time unit of PDSCH D2. According to empirical values, for example, the time interval between the first moment and the second moment may be greater than or equal to 14 OFDM symbols. The feedback time of PDSCH D2 can be determined according to the preset threshold and the feedback time of PDSCH D1.

Specifically, the network device #A obtains the scheduling conditions of the PDSCH D2 scheduled for the terminal device #A. Similarly, the scheduling conditions include: SCS, the scheduling duration of PDSCH D2, and the configuration of DMRS. According to the configuration of the DMRS, the last symbol X2_1 of the PDSCH D2 that bears the DMRS is determined. According to the scheduling duration of PDSCH D2, the symbol X2_2 of the last data of PDSCH D2 is determined. According to the scheduling duration of the SCS, the PDSCH D2, and the pattern of the DMRS, look up Table 1 to obtain the size N1_2 of the processing delay of the PDSCH D2. Wherein, N1_2 can also be understood as the duration required for terminal device #A to process PDSCH D2.

Optionally, the network device #A receives the capability information sent by the terminal device #A, and the network device #A determines the duration required by the terminal device #A to process the PDSCH D2 according to the capability information, that is, determines N1_2. It should be understood that N1_2 is the duration required for terminal device #A to process PDSCH D2 obtained according to the table lookup, that is, N1 in Table 1. The first processing delay is the duration of processing PDSCH D2 estimated by the network device #A from the last symbol of the DMRS of the PDSCH D2 by the terminal device #A. In this embodiment of the present application, for ease of understanding and differentiation, N1_2' will be used to represent the first processing delay.

Optionally, the first processing delay is determined according to at least one of the following parameters: the time corresponding to the last symbol on the time unit used by PDSCH D2, the symbol used to carry the demodulation reference signal DMRS on the time unit used by PDSCH D2 The time corresponding to the last symbol in , the duration required by terminal device #A to process PDSCH D2, and the length of the time unit used by PDSCH D2.

It should be understood that the instants referred to herein may refer to symbolic positions. Specifically, that is, network device #A can determine N1_2' according to X2_2 (ie, an example of T1), X2_1 (ie, an example of T2), and N1_2 (ie, an example of T3). Wherein, X2_2 and X2_1 may be determined according to the scheduling configuration of the PDSCH D2 by the network device #A. N1_2 may be determined according to the scheduling configuration of the PDSCHD2 by the network device #A and the lookup table 1 .

Optionally, N1_2'=X2_2-X2_1+N1_2.

Specifically, network device #A calculates the actual processing time of PDSCH D2 from the last DMRS symbol (that is, an example of the first processing delay) as: N1_2'=X2_2-X2_1+N1_2.

Optionally, in another implementation manner, N1_2' is a fixed value, such as the length of the time slot corresponding to PDSCH D2 (that is, an example of T5). For example, the length of the time slot corresponding to the PDSCH is 14 OFDM symbols, and the first processing delay is 14 OFDM symbols. Specifically, N1_2'=14.

Optionally, in another implementation manner, N1_2' is the length of the time unit used by PDSCH D2 (that is, an example of T4). For example, the length of the time unit used by PDSCH D2 is 13 OFDM symbols, that is, PDSCH D2 is carried by 13 OFDM symbols, and at this time, the first processing delay is 13 OFDM symbols. Specifically, N1_2'=13.

It should be noted that the above formula is only an exemplary illustration, and the present application is not limited thereto. For example, any modification to the above formula falls within the protection scope of the embodiments of the present application.

The method for calculating the feedback time of PDSCH D1 is as follows: network device #A obtains scheduling conditions of PDSCH D1 scheduled for terminal device #A, where the scheduling conditions include: SCS, scheduling duration of PDSCH D1, and DMRS configuration. According to the scheduling duration of the SCS, the PDSCH D1, and the configuration of the DMRS, look up Table 1 to obtain the processing time N1_1 of the PDSCH D1. X1_3 is the position where the N1_1 symbol is added after the last symbol of PDSCH D1.

The network device #A determines the earliest uplink feedback time X2_3 of the PDSCH D2 according to the earliest feedback time X1_3 of the PDSCH D1 scheduled for the terminal device #A, and the current processing time N1_2' of the PDSCH D2, and X2_3 is N1_2' symbols later than X1_3. That is, the difference between X2_3 and X1_3 is greater than or equal to N1_2'.

The difference between X2_3 and X1_3 is greater than N1_2', which can be expressed by the formula as: X2_3>X1_3+N1_2'. The difference between X2_3 and X1_3 is equal to N1_2', which can be expressed by a formula as: X2_3=X1_3+N1_2'.

The network device #A comprehensively considers the processing time of PDSCH D1 and the processing time of PDSCH D2 to determine the transmission time of the feedback signal of the current PDSCH D2, so that the earliest ACK/NACK feedback time of PDSCH D2 is the earliest ACK/NACK feedback time of PDSCH D1. After that, add the processing time of PDSCH D2. That is to say, the earliest ACK/NACK feedback time of PDSCH D2 is the earliest feedback time of PDSCH D2 after the actual processing time of PDSCH D2 is waited after the completion of PDSCH D1 processing. Thus, the problem of terminal resource conflict caused by the terminal equipment processing two PDSCHs at the same time due to the short feedback time is avoided.

In addition, in the embodiment of the present application, if the TA values of PDSCH D1 and PDSCH D2 are different, the network device #A further determines the second moment according to the difference between the TA of PDSCH D1 and the TA of PDSCH D2, X2_3>X1_3+N1_2' +(TA_2-TA_1) or X2_3>=X1_3+N1_2'+(TA_2-TA_1).

Network device #A comprehensively considers the processing time of PDSCH D1, the processing time of PDSCH D2, and the TA difference between PDSCH D1 and PDSCH D2 to determine the transmission time of the feedback signal of the current PDSCH D2, so that the earliest ACK/NACK feedback time of PDSCH D2 needs to be After the earliest ACK/NACK feedback time of PDSCH D1, plus the processing time of PDSCH D2 from the end of the last DMRS of PDSCH D2, plus the TA of the feedback signal of PDSCH D2 minus the feedback of PDSCH D1 The difference of the TA of the signal. That is to say, the earliest ACK/NACK feedback time of PDSCH D2 is the earliest feedback time of PDSCH D2 after the actual processing time of PDSCH D2 is waited after the completion of PDSCH D1 processing. Thus, the problem of terminal resource conflict caused by the terminal equipment processing two PDSCHs at the same time due to the short feedback time is avoided.

Optionally, the capability information of the terminal device #A reported by the terminal device #A to the network device #A. The capability information includes the downlink processing delay size of the terminal device #A and the number of PDSCHs that the terminal device #A can process simultaneously.

The downlink processing delay size of terminal equipment #A includes the processing delay size of terminal equipment #A under different scheduling conditions, and the scheduling conditions here include at least one or more of the following: subcarrier spacing of PDSCH; PDSCH The configuration of the DMRS, such as only the pre-demodulation reference signal, or both the pre-demodulation reference signal and the additional demodulation reference signal; the scheduling duration of the PDSCH; the type of PDSCH, the type of PDSCH can be, for example, type A or type B, where the time domain length of PDSCH of TYPE A is greater than or equal to 7 OFDM symbols, and the time domain length of PDSCH of TYPE B is less than 7 OFDM symbols; the resource mapping method of PDSCH, for example, the resource mapping method of PDSCH is time domain first and frequency later Domain mapping, or first frequency domain and then time domain mapping.

Wherein, the number of PDSCHs that can be simultaneously processed by terminal device #A may include one or more of the following:

1. The number of unicast or multicast PDSCHs that each carrier (cell) can handle simultaneously.

2. The number of unicast PDSCHs that can be processed simultaneously by each band.

3. The number of unicast PDSCHs that can be processed by high frequency or low frequency.

4. The total number of unicast PDSCHs that the terminal device #A can process simultaneously.

5. The number of PDSCHs per packet size.

For example, for data packets greater than 100K, terminal device #A can process one PDSCH simultaneously; for data packets less than or equal to 100K, terminal device #A can process two PDSCHs simultaneously.

In this embodiment of the present application, the PDSCH may be, for example, a unicast PDSCH, a multicast PDSCH, or a broadcast PDSCH. The number of PDSCHs that the terminal device can process at the same time, for example, the number of unicast PDSCHs that can be processed simultaneously on each carrier, or the number of unicast or broadcast PDSCHs that can be processed simultaneously on each carrier. Make specific restrictions.

220. The network device #A sends indication information to the terminal device #A, where the indication information is used to instruct the terminal device #A to send feedback information of the second downlink data at the second time or after the second time.

The terminal device #A sends the feedback information of the PDSCH D2 at the second time or after the second time according to the indication information.

Optionally, when the interval between the first moment and the second moment is greater than or equal to the first processing time delay, the terminal device #A sends the feedback information of PDSCH D2 after the second moment according to the indication information; The interval between the first time and the second time is smaller than the first processing time delay, and the terminal device #A determines that the feedback information of PDSCH D1 is not ACK information.

Under normal circumstances, scheduled in order, the feedback time of PDSCH D2 is not earlier than the feedback time of PDSCH D1. Terminal device #A receives the scheduling signaling of PDSCH D2, and if terminal device #A is receiving data of PDSCH D1 at this time, terminal device #A will judge whether there is a conflict. The way of judging whether there is a conflict is to determine the time interval between the time when the feedback information of PDSCH D1 is sent and the time when the feedback information of PDSCH D2 is sent. The conflict here can be understood as whether the terminal device needs to process the data of PDSCH D1 and PDSCH D2 at the same time. If the terminal device needs to process the data at the same time (eg, demodulate multiple downlink data at the same time), it means that there is a conflict.

In this embodiment of the present application, the terminal device can avoid increasing the number of data by first judging whether there is a conflict, or first judging whether it is necessary to process the current data because the previous scheduling has not been processed yet, and then process the multiple data. The processing resources of the terminal device, thereby avoiding the problem of wasting resources.

An implementation manner is to judge whether the time interval is greater than or equal to the first processing delay. If the time interval is less than the first processing delay, it means that there is a conflict, then the terminal device #A can interrupt the processing of PDSCH D1; if the time interval is greater than or equal to the first processing delay, it means that there is no conflict, then the terminal device #A #A buffers PDSCH D2 and waits for PDSCH D1 processing to complete and then performs PDSCH D2 processing.

Or, another implementation manner is to determine whether the time interval is greater than or equal to a preset threshold. If the time interval is less than the preset threshold, it means that there is a conflict, then terminal device #A can interrupt the processing of PDSCH D1; if the time interval is greater than or equal to the preset threshold, it means that there is no conflict, then terminal device #A A buffers the PDSCH D2 and performs the processing of the PDSCH D2 after waiting for the completion of the processing of the PDSCH D1. The preset threshold has been described at 210 and will not be repeated here.

As an example, the network device may determine according to the symbol difference between the feedback time of PDSCH D2 and the feedback time of PDSCH D1. Specifically, terminal device #A judges whether the earliest transmission time of ACK/NACK of PDSCH D2 estimated by network device #A is later than the earliest time of feedback time of PDSCH D1 by N1_2', where N1_2'=N1_2+X2_1-X2_2 or N1_2 '=14 or N1_2' is equal to the length of the time unit of PDSCH D2.

If the feedback time of network device #A to PDSCH D2 is N1_2' later than the earliest sending time of ACK/NACK of PDSCH D1, continue to process the data of PDSCH D1, and buffer the data of PDSCH D2 until the data processing of PDSCH D1 is finished, and then process the data of PDSCH D2. Data of PDSCH D2.

If the feedback time of network device #A to PDSCH D2 is no later than N1_2' than the earliest sending time of ACK/NACK of PDSCH D1, the processing of PDSCH D1 data is interrupted, and the data of PDSCH D2 is processed. If the processing of the PDSCH D1 is interrupted, the terminal device #A determines that the feedback information of the PDSCH D1 is not ACK information, for example, NACK or discontinuous transmission (DTX) may be fed back.

FIG. 7 illustrates the communication method of the embodiment of the present application with a specific example. In FIG. 7 , PDSCH D1 is abbreviated as D1, and PDSCH D2 is abbreviated as D2. The ACK/NACK of D1 represents the earliest time of sending feedback information of PDSCH D1; similarly, the ACK/NACK of D2 represents the earliest time of sending feedback information of PDSCH D2.

Assuming that PDSCH D1 is in slot 0, the symbol of the last data of PDSCH D1 is symbol 13, that is, X1_2=13. The last symbol of PDSCH D1 carries DMRS symbol 11, that is, X1_1=11. The SCS of PDSCH D1 is 15 kHz, and the duration of PDSCH D1 is 14. Look up Table 1 to determine the processing delay N1_1=13 of PDSCH D1.

Then the earliest transmission time of PDSCH D1 is: X1_3=X1_2+N1_1=13+13=26.

Assuming that PDSCH D2 is in time slot 1, the symbol of the last data of PDSCH D2 is symbol 12, that is, X2_2=12. The last symbol of PDSCH D2 carrying DMRS is symbol 3, that is, X2_1=3. According to Table 1, the processing time of PDSCH D2 is N1_2=8, that is, N1_2=8 is the processing time of PDSCH D2 calculated from the last end position of PDSCH after the last symbol carrying DMRS of PDSCH D2 ends. If starting from the position of the last DMRS of PDSCH D2, the processing time N1_2'=N1_2+(X2_2-X2_1)=8+12-3=17.

According to the foregoing invention, the difference between the earliest feedback time X2_3 of PDSCH D2 and X1_3 is N1_2', X2_3>X1_3+N1_2'=26+17=43=3*14+1. 17OS in FIG. 7 represents 17 OFDM symbols, and the unit is symbol.

Therefore, from the perspective of terminal device #A, the earliest possible transmission time of PDSCH D2 is after symbol 1 of time slot 2. And there is no situation that two PDSCHs are processed at the same time, thereby causing waste of resources.

In addition, network device #A can also comprehensively consider the processing time of PDSCH D1, the processing time of PDSCH D2, and the TA difference between PDSCH D1 and PDSCH D2 to determine the current sending time of the feedback signal of PDSCH D2, so that the earliest ACK/NACK of PDSCH D2 Feedback time, after the earliest ACK/NACK feedback time of PDSCH D1, plus the processing time of PDSCH D2 from the end of the last DMRS of PDSCH D2, plus the TA of the feedback signal of PDSCH D2 minus the The difference value of TA of the feedback signal of PDSCH D1. That is to say, the earliest ACK/NACK feedback time of PDSCH D2 is the earliest feedback time of PDSCH D2 after the actual processing time of PDSCH D2 is waited after the completion of PDSCH D1 processing. Thus, the problem of terminal resource conflict caused by the terminal equipment processing two PDSCHs at the same time due to the short feedback time is avoided.

Through the embodiments of the present application, considering that different scheduling conditions may cause the terminal equipment to process downlink data differently, it may happen that the terminal equipment needs to process multiple downlink data at the same time, and then the processing resources of the terminal equipment need to be increased, resulting in waste of resources. In this embodiment of the present application, the network device schedules the timing of sending the feedback information of two downlink data using different time units, according to the earliest feedback moment of the previous downlink data (that is, the time of sending the feedback information of the first downlink data). An example of the time), and the earliest feedback time of the current downlink data (that is, an example of the time of transmitting the feedback information of the second downlink data) is determined. By considering the earliest feedback time of the previous downlink data, it can be avoided that the current downlink data must be processed before the previous scheduling has been processed, thereby increasing the processing resources and implementation costs of the terminal equipment, resulting in waste of resources.

The method embodiments of the present application are described in detail above with reference to FIGS. 1 to 7 , and the device embodiments of the present application are described in detail below with reference to FIGS. 8 to 11 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments. Therefore, for the parts not described in detail, reference may be made to the foregoing method embodiments.

FIG. 8 is a schematic block diagram of a network device provided by an embodiment of the present application. The network device 800 includes a processing unit 810 and a transceiver unit 820 .

The processing unit 810 is configured to determine a second time according to the first time and the first processing delay, where the first time is the earliest time estimated by the network device that the terminal device can send the feedback information of the first downlink data, so The first processing delay is the delay estimated by the network device for the terminal device to process the second downlink data, and the time unit used by the second downlink data is located in the time unit used by the first downlink data Afterwards, wherein the second moment is located after the first moment;

The transceiver unit 820 is configured to send indication information to the terminal device, where the indication information is used to instruct the terminal device to send feedback information of the second downlink data at the second time or after the second time.

Optionally, the interval between the first moment and the second moment is greater than or equal to the first processing delay.

Optionally, the time unit used by the second downlink data is the first time unit after the time unit used by the first downlink data.

Optionally, the first processing delay is determined according to at least one of the following parameters:

The time corresponding to the last symbol on the time unit used by the second downlink data, the time corresponding to the last symbol in the symbols used to carry the demodulation reference signal DMRS on the time unit used by the second downlink data, the The duration required by the terminal device to process the second downlink data, and the length of the time unit used by the second downlink data.

Optionally, the first processing delay is T, and the T is obtained according to at least any one of the following formulas,

T=T1-T2+T3, or,

T=T4, or,

T=T5,

in,

T1 is the time corresponding to the last symbol on the time unit used by the second downlink data,

T2 is the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data,

T3 is the time required for the terminal device to process the second downlink data,

T4 is the length of the time unit used by the second downlink data,

T5 is the length of the time slot corresponding to the second downlink data.

Optionally, the transceiver unit 820 is further configured to: before the processing unit 810 determines the second time according to the first time and the first processing delay,

The capability information sent by the terminal device is received, and the network device determines the first moment according to the capability information.

Optionally, the transceiver unit 820 is further configured to receive capability information sent by the terminal device, and the terminal device determines, according to the capability information, a duration required by the terminal device to process the second downlink data.

It should be understood that the network device 800 shown in FIG. 8 may correspond to the network device in the communication method in the above-mentioned embodiment, specifically, may correspond to the network device in the communication method in FIG. 6 or FIG. 7 , and the network device 800 The above and other operations and/or functions of each unit are respectively to implement the corresponding flow of the communication method in FIG. 6 or FIG. 7 , and are not repeated here for brevity.

FIG. 9 is a schematic structural diagram of a network device 10 provided by an embodiment of the present application. As shown in FIG. 9 , the network device 10 includes: a processor 11 , a memory 12 , a communication interface 13 and a bus 14 . The processor 11, the memory 12, and the communication interface 13 (for example, a network card) communicate through the bus 14, and can also communicate through other means such as wireless transmission. The memory 12 is used for storing instructions, the processor 11 is used for executing the instructions stored in the memory 12, the memory 12 stores program codes, and the processor 11 can call the program codes stored in the memory 12 to control the communication interface 13 to send and receive information or signal, so that the network device 10 performs the functions, performed actions or processing procedures of the network devices in the above-mentioned FIG. 1 to FIG. 7 .

Specifically, the processor 11 can call the program code stored in the memory 12 to perform the following operations:

The second time is determined according to the first time and the first processing delay, where the first time is the earliest time estimated by the network device that the terminal device can send the feedback information of the first downlink data, and the first processing delay is the time delay estimated by the network device for the terminal device to process the second downlink data, and the time unit used by the second downlink data is located after the time unit used by the first downlink data, wherein the the second time instant is located after the first time instant;

The control communication receiving 13 sends indication information to the terminal device, where the indication information is used to instruct the terminal device to send feedback information of the second downlink data at the second time or after the second time.

It should be understood that the network device 10 may correspond to the network device described in the foregoing method embodiments, and each module or unit in the network device 10 is respectively configured to perform the functions of the network device in the foregoing method embodiments and perform various actions or functions. processing. Here, in order to avoid redundant description, the detailed description thereof is omitted.

FIG. 10 is a schematic block diagram of a terminal device provided by an embodiment of the present application. The terminal device 1000 includes a transceiver unit 1010 .

The transceiver unit 1010 is configured to receive indication information sent by the network device, where the indication information is used to instruct the terminal device to send feedback information of the second downlink data after the second moment, wherein,

The second time is determined according to the first time and the first processing delay, and the first time is the earliest time estimated by the network device that the terminal device can send the feedback information of the first downlink data, so the first processing delay is the delay estimated by the network device for the terminal device to process the second downlink data, and the second moment is located after the first moment, and

The time unit used by the second downlink data is located after the time unit used by the first downlink data;

The transceiver unit 1010 is further configured to: send feedback information of the second downlink data according to the indication information.

Optionally, the terminal device 1000 further includes a processing unit 1020, configured to: determine the interval between the first moment and the second moment,

When the interval between the first time and the second time is greater than or equal to the first processing time delay, the transceiver unit 1010 may, according to the indication information, send the data at the second time or after the second time. sending feedback information of the second downlink data; or

When the interval between the first moment and the second moment is less than the first processing time delay, the processing unit 1020 determines that the feedback information of the first downlink data is not ACK information.

Optionally, the interval between the first moment and the second moment is greater than or equal to the first processing delay.

Optionally, the first processing delay is determined according to at least one of the following parameters:

The time corresponding to the last symbol on the time unit used by the second downlink data, the time corresponding to the last symbol in the symbols used to carry the demodulation reference signal DMRS on the time unit used by the second downlink data, the The duration required by the terminal device to process the second downlink data, the length of the time unit used by the second downlink data, and the length of the time slot corresponding to the second downlink data.

Optionally, the first processing delay is T, and the T is obtained according to at least any one of the following formulas:

T=T1-T2+T3, or,

T=T4, or,

T=T5,

in,

T1 is the time corresponding to the last symbol on the time unit used by the second downlink data,

T2 is the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data,

T3 is the time required for the terminal device to process the second downlink data,

T4 is the length of the time unit used by the second downlink data,

T5 is the length of the time slot corresponding to the second downlink data.

Optionally, the transceiver unit 1010 is specifically configured to:

Before receiving the indication information sent by the network device, the method includes: sending capability information to the network device, where the first moment is determined according to the capability information.

Optionally, the transceiver unit 1010 is further configured to: send capability information to the network device, and the time duration required by the terminal device to process the second downlink data is determined according to the capability information.

It should be understood that the terminal device 1000 shown in FIG. 10 may correspond to the terminal device in the communication method in the above-mentioned embodiment, specifically, may correspond to the terminal device in the communication method in FIG. 6 or FIG. 7 , and the terminal device 1000 The above and other operations and/or functions of each unit are respectively to implement the corresponding flow of the communication method in FIG. 6 or FIG. 7 , and are not repeated here for brevity.

FIG. 11 is a schematic structural diagram of a terminal device 20 provided by an embodiment of the present application. As shown in FIG. 11 , the terminal device 20 includes: a processor 21 , a memory 22 , a communication interface 23 and a bus 24 . The processor 21, the memory 22, and the communication interface 23 communicate through the bus 24, and can also communicate through other means such as wireless transmission. The memory 22 is used for storing instructions, the processor 21 is used for executing the instructions stored in the memory 22, the memory 22 stores program codes, and the processor 21 can call the program codes stored in the memory 22 to control the communication interface 23 to send and receive information or signal, so that the terminal device 20 executes the functions, performed actions or processing procedures of each processing unit in the terminal device in the above method embodiments.

It should be understood that the terminal device 20 may correspond to the terminal device described in the above method embodiments, and each module or unit in the terminal device 20 is respectively used to execute the function and execution of each processing unit in the terminal device device in the method embodiment. each action or process. Here, in order to avoid redundant description, the detailed description thereof is omitted.

In this embodiment of the present application, the processor may be a CPU, and the processor may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable Logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or any conventional processor or the like.

It should be noted that the embodiments of the present application may be applied to the processor of the acceleration card, and may also be implemented by the processor of the acceleration card. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It should be understood that the memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), Double data rate synchronous dynamic random access memory (double data date SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch linkDRAM, SLDRAM) and direct Memory bus random access memory (direct ram bus RAM, DR RAM).

It should also be understood that, in addition to the data bus, the bus may also include a power bus, a control bus, a status signal bus, and the like. However, for the sake of clarity, the various buses are labeled as buses in the figure.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (24)

1. a communication method, is characterized in that, comprises: The second time is determined according to the first time and the first processing delay, the first time is the estimated earliest time when the terminal device can send the feedback information of the first downlink data, and the first processing delay is the estimated time The time delay for the terminal device to process the second downlink data, the time unit used by the second downlink data is located after the time unit used by the first downlink data, wherein the second moment is located after the first moment , the interval between the first moment and the second moment is greater than or equal to the first processing delay; Sending indication information to the terminal device, where the indication information is used to instruct the terminal device to send the feedback information of the second downlink data at the second time or after the second time. 2. The communication method according to claim 1, wherein the first processing delay is determined according to at least one of the following parameters: The time corresponding to the last symbol on the time unit used by the second downlink data, the time corresponding to the last symbol in the symbols used to carry the demodulation reference signal DMRS on the time unit used by the second downlink data, the The duration required by the terminal device to process the second downlink data, the length of the time unit used by the second downlink data, and the length of the time slot corresponding to the second downlink data. 3. The communication method according to claim 2, wherein the first processing delay is T, and the T is obtained according to at least any one of the following formulas: T=T1-T2+T3, or T=T4, or T=T5, in, T1 is the time corresponding to the last symbol on the time unit used by the second downlink data, T2 is the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, T3 is the time required for the terminal device to process the second downlink data, T4 is the length of the time unit used by the second downlink data, T5 is the length of the time slot corresponding to the second downlink data. 4. The communication method according to any one of claims 1 to 3, wherein before determining the second time according to the first time and the first processing delay, the method comprises: The capability information sent by the terminal device is received, and the first moment is determined according to the capability information. 5. The communication method according to claim 2 or 3, wherein the communication method further comprises: The capability information sent by the terminal device is received, and the duration required by the terminal device to process the second downlink data is determined according to the capability information. 6. A communication method, characterized in that, comprising: Receive indication information sent by the network device, where the indication information is used to indicate that feedback information of the second downlink data is sent at the second time or after the second time, wherein, The second time is determined according to the first time and the first processing delay, the first time is the estimated earliest time at which the terminal device can send the feedback information of the first downlink data, and the first processing delay is the estimated delay for the terminal device to process the second downlink data, the second time is located after the first time, and the interval between the first time and the second time is greater than or equal to the the first processing delay described above, and The time unit used by the second downlink data is located after the time unit used by the first downlink data; According to the indication information, the feedback information of the second downlink data is sent. 7. The communication method according to claim 6, wherein, According to the indication information, sending the feedback information of the second downlink data includes: When the interval between the first time and the second time is greater than or equal to the first processing time delay, according to the indication information, send the second time or after the second time. Feedback information of the second downlink data; or When the interval between the first moment and the second moment is less than the first processing time delay, it is determined that the feedback information of the first downlink data is not ACK information. 8. The communication method according to claim 6, wherein the first processing delay is determined according to at least one of the following parameters: The time corresponding to the last symbol on the time unit used by the second downlink data, the time corresponding to the last symbol in the symbols used to carry the demodulation reference signal DMRS on the time unit used by the second downlink data, the The duration required by the terminal device to process the second downlink data, the length of the time unit used by the second downlink data, and the length of the time slot corresponding to the second downlink data. 9. The communication method according to claim 8, wherein the first processing delay is T, and the T is obtained according to at least any one of the following formulas: T=T1-T2+T3, or T=T4, or T=T5, in, T1 is the time corresponding to the last symbol on the time unit used by the second downlink data, T2 is the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, T3 is the time required for the terminal device to process the second downlink data, T4 is the length of the time unit used by the second downlink data, T5 is the length of the time slot corresponding to the second downlink data. 10. The communication method according to any one of claims 6 to 9, wherein before receiving the indication information sent by the network device, the method comprises: Send capability information to the network device, where the first moment is determined according to the capability information. 11. The communication method according to claim 8 or 9, wherein the communication method further comprises: The capability information is sent to the network device, and the time duration required by the terminal device to process the second downlink data is determined according to the capability information. 12. A communication device, comprising: The processing unit is configured to determine a second time according to the first time and the first processing delay, where the first time is the earliest time estimated that the terminal device can send the feedback information of the first downlink data, and the first processing time The delay is the estimated delay for the terminal device to process the second downlink data, and the time unit used by the second downlink data is located after the time unit used by the first downlink data, wherein the second time After the first moment, the interval between the first moment and the second moment is greater than or equal to the first processing delay; A transceiver unit, configured to send indication information to the terminal device, where the indication information is used to instruct the terminal device to send feedback information of the second downlink data at the second time or after the second time. 13. The communication device according to claim 12, wherein the first processing delay is determined according to at least one of the following parameters: The time corresponding to the last symbol on the time unit used by the second downlink data, the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, the The duration required by the terminal device to process the second downlink data, the length of the time unit used by the second downlink data, and the length of the time slot corresponding to the second downlink data. 14. The communication device according to claim 13, wherein the first processing delay is T, and the T is obtained according to at least any one of the following formulas: T=T1-T2+T3, or, T=T4, or T=T5, or, in, T1 is the time corresponding to the last symbol on the time unit used by the second downlink data, T2 is the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, T3 is the time required for the terminal device to process the second downlink data, T4 is the length of the time unit used by the second downlink data, T5 is the length of the time slot corresponding to the second downlink data. 15. The communication device according to any one of claims 12 to 14, wherein the transceiver unit is further configured to: before the processing unit determines the second time according to the first time and the first processing delay , The capability information sent by the terminal device is received, and the first moment is determined according to the capability information. 16. The communication apparatus according to claim 13 or 14, wherein the transceiver unit is further configured to receive capability information sent by the terminal device, and determine, according to the capability information, that the terminal device processes the second The time required for downlink data. 17. A communication device, comprising: a transceiver unit, configured to receive indication information sent by the network device, where the indication information is used to indicate that feedback information of the second downlink data is sent after the second moment, wherein, The second time is determined according to the first time and the first processing delay, the first time is the estimated earliest time when the terminal device can send the feedback information of the first downlink data, and the first processing delay is the estimated delay for the terminal device to process the second downlink data, the second time is located after the first time, and the interval between the first time and the second time is greater than or equal to the the first processing delay described above, and The time unit used by the second downlink data is located after the time unit used by the first downlink data; The transceiver unit is further configured to: send feedback information of the second downlink data according to the indication information. 18. The communication device according to claim 17, wherein the communication device further comprises a processing unit: The processing unit is used for: judging the interval between the first moment and the second moment, When the interval between the first time and the second time is greater than or equal to the first processing time delay, the sending and receiving unit, according to the indication information, at the second time or the second time then send the feedback information of the second downlink data; or When the interval between the first moment and the second moment is less than the first processing time delay, the processing unit determines that the feedback information of the first downlink data is not ACK information. 19. The communication device according to claim 17, wherein the first processing delay is determined according to at least one of the following parameters: The time corresponding to the last symbol on the time unit used by the second downlink data, the time corresponding to the last symbol in the symbols used to carry the demodulation reference signal DMRS on the time unit used by the second downlink data, the The duration required by the terminal device to process the second downlink data, the length of the time unit used by the second downlink data, and the length of the time slot corresponding to the second downlink data. 20. The communication device according to claim 19, wherein the first processing delay is T, and the T is obtained according to at least any one of the following formulas: T=T1-T2+T3, or, T=T4, or T=T5, in, T1 is the time corresponding to the last symbol on the time unit used by the second downlink data, T2 is the time corresponding to the last symbol in the symbols used for carrying the demodulation reference signal DMRS on the time unit used by the second downlink data, T3 is the time required for the terminal device to process the second downlink data, T4 is the length of the time unit used by the second downlink data, T5 is the length of the time slot corresponding to the second downlink data. 21. The communication device according to any one of claims 17 to 20, wherein the transceiver unit is specifically configured to: Before receiving the indication information sent by the network device, the method includes: sending capability information to the network device, where the first moment is determined according to the capability information. 22. The communication device according to claim 19 or 20, wherein the transceiver unit is further configured to: The capability information is sent to the network device, and the time duration required by the terminal device to process the second downlink data is determined according to the capability information. 23. A computer-readable storage medium, characterized by storing computer instructions, which, when executed on a computer, cause the computer to perform the communication method according to any one of claims 1 to 11. 24. A communication device, characterized in that the device comprises a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the processor causes the processor to execute the method of claim 1 . The communication method described in any one of to 11.

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